diff --git a/SConstruct b/SConstruct
index dbd1f57..89ca3d8 100644
--- a/SConstruct
+++ b/SConstruct
@@ -36,51 +36,19 @@ if ARGUMENTS.get('CCFLAGS',0):
 # Convert CCFLAGS into list
 env.Replace(CCFLAGS = str(env['CCFLAGS']).split(' '))
 
-#################### Tests ###################
-
-def getVarSize(conf,var):
-    conf.Message("checking for size of "+var+" ")
-    rc = conf.TryCompile("""
-#include <stdio.h>
-#include <sys/types.h>    
-      
-main ()
-{
- if ((%s *) 0)
-   return 0;
- if (sizeof (%s))
-   return 0;
- ;
- return 0;
-}
-""" % (var,var),'.c')
-    if rc:
-	rc,result = conf.TryRun('''
-#include <stdio.h>
-#include <sys/types.h>	
-
-main ()
-{
-    printf("%%d",sizeof(%s));
-    return 0;
-}''' % var,'.c')
-	if rc:
-	    rc=result
-    conf.Result(rc)
-    return rc
-
 ############  Start configuration   ##############
 
 from maintainer import checkForMaintainerMode
 from compilertest import checkForCCOption
 from prefix import checkForUserPrefix
 from lockprefix import checkForLockPrefix
+from clangtest import getVariableSize
 
 conf = Configure(env,{'checkForCCOption':checkForCCOption,
                       'MAINTAINER_MODE':checkForMaintainerMode,
 		      'checkForLockPrefix':checkForLockPrefix,
 		      'checkPrefix':checkForUserPrefix,
-		      'sizeOf':getVarSize
+		      'sizeOf':getVariableSize
 		      })
 # check for CC options
 for option in Split("""
diff --git a/site_scons/clangtest.py b/site_scons/clangtest.py
new file mode 100644
index 0000000..40d3938
--- /dev/null
+++ b/site_scons/clangtest.py
@@ -0,0 +1,49 @@
+#
+# SCons C language related tests
+#
+# Version 1.1
+# 25-Jul-2009
+#
+
+def checkForVariable(conf,variable,include):
+    """Checks if variable is defined in given include statements."""
+    conf.Message("checking if variable %s is defined... " % variable)
+    rc = conf.TryCompile("""
+%s
+void dummy(void);
+void dummy(void) { %s = 0; }
+"""% (include,variable),'.c')
+    conf.Result(rc)
+    return rc
+   
+def getVariableSize(conf,var):
+    """Returns variable size in bytes"""
+    conf.Message("checking for size of "+var+" ")
+    rc = conf.TryCompile("""
+#include <stdio.h>
+#include <sys/types.h>    
+      
+main ()
+{
+ if ((%s *) 0)
+   return 0;
+ if (sizeof (%s))
+   return 0;
+ ;
+ return 0;
+}
+""" % (var,var),'.c')
+    if rc:
+	rc,result = conf.TryRun('''
+#include <stdio.h>
+#include <sys/types.h>	
+
+main ()
+{
+    printf("%%d",sizeof(%s));
+    return 0;
+}''' % var,'.c')
+	if rc:
+	    rc=result
+    conf.Result(rc)
+    return rc